EP0597496B1 - Appareil de chauffage d'images permettant à varier les intervals entre les matériaux d'enregistrement - Google Patents

Appareil de chauffage d'images permettant à varier les intervals entre les matériaux d'enregistrement Download PDF

Info

Publication number
EP0597496B1
EP0597496B1 EP93118386A EP93118386A EP0597496B1 EP 0597496 B1 EP0597496 B1 EP 0597496B1 EP 93118386 A EP93118386 A EP 93118386A EP 93118386 A EP93118386 A EP 93118386A EP 0597496 B1 EP0597496 B1 EP 0597496B1
Authority
EP
European Patent Office
Prior art keywords
heater
temperature
sheet
film
heating apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93118386A
Other languages
German (de)
English (en)
Other versions
EP0597496A1 (fr
Inventor
Yasumasa C/O Canon Kabushiki Kaisha Ohtsuka
Kouichi C/O Canon Kabushiki Kaisha Okuda
Yohji C/O Canon Kabushiki Kaisha Tomoyuki
Akira C/O Canon Kabushiki Kaisha Hayakawa
Daizo C/O Canon Kabushiki Kaisha Fukuzawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Publication of EP0597496A1 publication Critical patent/EP0597496A1/fr
Application granted granted Critical
Publication of EP0597496B1 publication Critical patent/EP0597496B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2039—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat with means for controlling the fixing temperature
    • G03G15/2042—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat with means for controlling the fixing temperature specially for the axial heat partition
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6582—Special processing for irreversibly adding or changing the sheet copy material characteristics or its appearance, e.g. stamping, annotation printing, punching
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2039—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat with means for controlling the fixing temperature
    • G03G15/2046—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat with means for controlling the fixing temperature specially for the influence of heat loss, e.g. due to the contact with the copy material or other roller
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00535—Stable handling of copy medium
    • G03G2215/00556—Control of copy medium feeding
    • G03G2215/00599—Timing, synchronisation
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/20—Details of the fixing device or porcess
    • G03G2215/2003—Structural features of the fixing device
    • G03G2215/2016—Heating belt
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/20—Details of the fixing device or porcess
    • G03G2215/2003—Structural features of the fixing device
    • G03G2215/2016—Heating belt
    • G03G2215/2035—Heating belt the fixing nip having a stationary belt support member opposing a pressure member
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/20—Details of the fixing device or porcess
    • G03G2215/2003—Structural features of the fixing device
    • G03G2215/2016—Heating belt
    • G03G2215/2035—Heating belt the fixing nip having a stationary belt support member opposing a pressure member
    • G03G2215/2038—Heating belt the fixing nip having a stationary belt support member opposing a pressure member the belt further entrained around one or more rotating belt support members

Definitions

  • a reference numeral 2 is a pressure roller as a pressing member, comprising an elastic rubber layer such as silicone rubber excelling in parting properties.
  • the endless fixing film 1 is sandwiched between the heater 6 and the pressure roller 2, being pressed on the bottom surface of the heater 6 by the pressure roller 2 with an overall contact pressure of 4 - 7 kg generated by a pressure generating means, wherein the pressure roller 2 rotates in the counterclockwise direction, that is, the direction in which the recording material P is conveyed.
  • An image forming process is started by an image formation start signal and is carried out in an unshown image forming station, wherein the recording material P delivered to a fixing apparatus is guided by an entrance guide 8 into a pressure nip N (fixing nip) formed between the temperature-controlled heater 6 and pressure roller 2, between the fixing film 1 and the pressure roller 2, and is passed through the nip while being subjected to the compressing force of the fixing nip N, as if being laminated with the fixing film, with the surface of the recording material P carrying the unfixed toner image being tightly pressed on the film 1, on the bottom surface, travelling at the same speed and in the same direction as the recording material P.
  • a pressure nip N fixing nip
  • the difference in the external diameter of the pressuring member 2 reaches as much as several hundreds of micron, between the sheet passage and non-sheet passage portions.
  • the speed at which the film is rotated becomes different between the left and right sides, causing thereby the film to be twisted to be broken, or causing a large size sheet such as A size paper to be wrinkled if it is fed immediately after the difference occurs.
  • a block diagram of this control system is shown in Figure 3.
  • a CPU 15 takes in the output of the thermistor 4, through an A/D converter 16, and controls the power supply to the exothermic layer 5 of the heater 6, through an AC driver 17, whereby the temperature of the heater 6 is kept at a predetermined one.
  • a power detection circuit 18 if it is of a type which controls the heater output based on the voltage of an AC input (AC power source) 19 and the wave number control, it measures the number of power supplying waves within a referential period, and computes the input power, the result of which is sent to the CPU.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fixing For Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)

Claims (5)

  1. Appareil de chauffage d'images comportant :
    un dispositif chauffant qui est immobile lors de l'utilisation,
    un film pouvant glisser sur ledit dispositif chauffant,
    un élément de soutien pouvant coopérer avec ledit dispositif chauffant pour former une zone de serrage, ledit film étant interposé entre le dispositif chauffant et l'élément de soutien, afin qu'une image portée sur un support d'enregistrement avancé à travers ladite zone de serrage soit chauffée à travers ledit film par de la chaleur provenant dudit dispositif chauffant,
       caractérisé en ce que
    des moyens de réglage de l'intervalle d'avance sont disposés de façon à augmenter progressivement l'intervalle des supports d'enregistrement, auquel les supports d'enregistrement sont avancés les uns à la suite des autres à travers ladite zone de serrage, lorsqu'un mode de fonctionnement en continu est sélectionné pour des supports d'enregistrement ayant le même format, mais non le plus grand format possible,
    et en ce qu'aucun élément de détection de température n'est disposé dans la partie de non-passage de feuille dudit dispositif chauffant.
  2. Appareil de chauffage d'images selon la revendication 1, dans lequel lesdits moyens de réglage de l'intervalle d'avance règlent l'intervalle d'avance en réponse à un comptage des supports d'enregistrement avancés les uns à la suite des autres.
  3. Appareil de chauffage d'images selon la revendication 1, dans lequel lesdits moyens de réglage de l'intervalle d'avance règlent l'intervalle d'avance en réponse à de l'énergie fournie audit dispositif chauffant.
  4. Appareil de chauffage d'images selon la revendication 1, dans lequel lesdits moyens de réglage de l'intervalle d'avance règlent l'intervalle d'avance en réponse à une baisse de la température dudit dispositif chauffant lorsque l'énergie fournie audit dispositif chauffant est coupée pendant un laps de temps prédéterminé.
  5. Appareil de chauffage d'images selon la revendication 1, dans lequel lesdits moyens de réglage de l'intervalle d'avance règlent l'intervalle d'avance en réponse à une élévation de la température dudit dispositif chauffant lorsque de l'énergie est fournie audit dispositif chauffant pendant un laps de temps prédéterminé.
EP93118386A 1992-11-13 1993-11-12 Appareil de chauffage d'images permettant à varier les intervals entre les matériaux d'enregistrement Expired - Lifetime EP0597496B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP328837/92 1992-11-13
JP4328837A JP2727899B2 (ja) 1992-11-13 1992-11-13 像加熱装置及び画像形成装置

Publications (2)

Publication Number Publication Date
EP0597496A1 EP0597496A1 (fr) 1994-05-18
EP0597496B1 true EP0597496B1 (fr) 1998-04-01

Family

ID=18214643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93118386A Expired - Lifetime EP0597496B1 (fr) 1992-11-13 1993-11-12 Appareil de chauffage d'images permettant à varier les intervals entre les matériaux d'enregistrement

Country Status (6)

Country Link
US (1) US5669039A (fr)
EP (1) EP0597496B1 (fr)
JP (1) JP2727899B2 (fr)
DE (1) DE69317732T2 (fr)
ES (1) ES2113988T3 (fr)
HK (1) HK1011757A1 (fr)

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JPH09297433A (ja) * 1996-05-08 1997-11-18 Minolta Co Ltd ディジタル複写機
JP3389475B2 (ja) * 1997-09-19 2003-03-24 シャープ株式会社 画像形成装置
JP3780081B2 (ja) * 1997-11-07 2006-05-31 キヤノン株式会社 画像形成装置
US6185389B1 (en) * 2000-01-28 2001-02-06 Lexmark International, Inc. Control of thermal heating in a belt fuser
US6253046B1 (en) 2000-04-19 2001-06-26 Lexmark International, Inc. Multi-functional fuser backup roll release mechanism
US6285838B1 (en) 2000-09-01 2001-09-04 Lexmark International, Inc. Belt fuser overheat control
JP4659204B2 (ja) 2000-11-24 2011-03-30 キヤノン株式会社 定着装置及びこの定着装置を備える画像形成装置
JP4125023B2 (ja) 2001-03-13 2008-07-23 キヤノン株式会社 定着装置
JP5054868B2 (ja) * 2001-07-03 2012-10-24 キヤノン株式会社 画像形成装置
JP2003255769A (ja) * 2002-02-28 2003-09-10 Ricoh Co Ltd 画像形成装置
JP2004205988A (ja) 2002-12-26 2004-07-22 Canon Inc 加熱装置
JP2005157180A (ja) * 2003-11-28 2005-06-16 Fuji Xerox Co Ltd 画像形成装置及び画像形成方法
EP1632822B1 (fr) * 2004-09-06 2017-04-05 Canon Kabushiki Kaisha Appareil de formation des images et procedé de formation des images
JP4829551B2 (ja) * 2004-09-07 2011-12-07 キヤノン株式会社 画像形成装置
US7702249B2 (en) * 2004-09-07 2010-04-20 Canon Kabushiki Kaisha Image forming apparatus with variable temperature treating modes
JP4549199B2 (ja) 2005-02-08 2010-09-22 キヤノン株式会社 画像加熱装置
JP2007025237A (ja) 2005-07-15 2007-02-01 Ricoh Co Ltd 定着装置及び画像形成装置
JP4794954B2 (ja) * 2005-09-13 2011-10-19 キヤノン株式会社 画像加熱装置
JP5173464B2 (ja) * 2008-02-08 2013-04-03 キヤノン株式会社 画像形成装置
JP2009199030A (ja) * 2008-02-25 2009-09-03 Murata Mach Ltd 画像形成装置
US20100329766A1 (en) * 2009-06-26 2010-12-30 Daniel Paul Cahill Device and method for printing banner media
US7957661B2 (en) * 2009-06-30 2011-06-07 Lexmark International, Inc. Control of overheating in an image fixing assembly
JP2011133524A (ja) * 2009-12-22 2011-07-07 Canon Inc 画像形成装置
JP5538866B2 (ja) * 2009-12-22 2014-07-02 キヤノン株式会社 画像形成装置
US9213280B2 (en) * 2013-10-21 2015-12-15 Canon Kabushiki Kaisha Image-forming apparatus supplying power to heat generating member using phase control and/or wave number control
JP2015221721A (ja) 2014-04-30 2015-12-10 キヤノン株式会社 シート搬送装置及び画像形成装置
JP6855745B2 (ja) * 2016-10-14 2021-04-07 ブラザー工業株式会社 画像形成装置および制御方法
JP6939028B2 (ja) 2017-03-31 2021-09-22 ブラザー工業株式会社 画像形成装置
JP6737228B2 (ja) * 2017-04-27 2020-08-05 京セラドキュメントソリューションズ株式会社 画像形成装置
JP2021076658A (ja) * 2019-11-06 2021-05-20 ブラザー工業株式会社 画像形成装置
JP7414485B2 (ja) * 2019-11-19 2024-01-16 キヤノン株式会社 画像形成装置

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JPH04174457A (ja) * 1990-11-07 1992-06-22 Sharp Corp 電子写真装置
US5130750A (en) * 1990-12-21 1992-07-14 Xerox Corporation Cross-pitch scheduling of documents and copy sheets in a copy system
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EP0534417B1 (fr) 1991-09-24 1997-02-12 Canon Kabushiki Kaisha Appareil de chauffage d'une image comprenant plusieurs détecteurs de température
JPH06314008A (ja) * 1993-04-28 1994-11-08 Canon Inc 定着装置

Also Published As

Publication number Publication date
HK1011757A1 (en) 1999-07-16
DE69317732T2 (de) 1998-09-24
ES2113988T3 (es) 1998-05-16
US5669039A (en) 1997-09-16
JP2727899B2 (ja) 1998-03-18
DE69317732D1 (de) 1998-05-07
JPH06149103A (ja) 1994-05-27
EP0597496A1 (fr) 1994-05-18

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